3
3-1. ALWAYS OBSERVE FOR SAFETY
Before obtaining access to terminal, all supply circuits must be disconnected.
INDOOR UNIT SERVICE MANUAL
3
SAFETY PRECAUTION
3-2. CAUTIONS RELATED TO NEW REFRIGERANT
Cautions for units utilizing refrigerant R410A
Preparation before the repair service.
• Prepare the proper tools.
• Prepare the proper protectors.
• Provide adequate ventilation.
• After stopping the operation of the air conditioner, turn off
the power-supply beaker.
• Discharge the condenser before the work involving the
electric parts.
Precautions during the repair service.
• Do not perform the work involving the electric parts
with wet hands.
• Do not pour water into the electric parts.
• Do not touch the refrigerant.
• Do not touch the hot or cold areas in the refrigerating cycle.
• When the repair or the inspection of the circuit needs to be
done without turning off the power, exercise great caution
not to touch the live parts.
Use new refrigerant pipes.
In case of using the existing pipes for R22, be careful with
the following.
· Be sure to clean the pipes and make sure that the insides
of the pipes are clean.
· Change flare nut to the one provided with this product.
Use a newly flared pipe.
· Avoid using thin pipes.
Use a vacuum pump with a reverse flow check
valve.
Vacuum pump oil may flow back into refrigerant cycle and
that can cause deterioration of refrigerant oil, etc.
2
REFERENCE MANUAL
Model Name
Service Ref.
Service
Manual No.
PLA-ZRP35/50/60/71/125/140BA
PLA-ZRP35/50/60/71/125/140BAR1.UK
OCH535
OCB535
PLA-ZRP100BA
PLA-ZRP100BAR1
PLA-ZRP100BAR1-ER
OCH529
OCB529
PCA-RP35/50/60/71/100/125/140KAQ
PCA-RP35/100/125/140KAQR2
PCA-RP35/100/125/140KAQR2-ER
PCA-RP50/60/71KAQR1
OCH491
OCB491
PCA-RP71HAQ
PCA-RP71HAQ
PCA-RP71HAQ-ER
OCH492
OCB492
PKA-RP35/50HAL
PKA-RP35/50HALR1
PKA-RP35/50HALR1-ER
OCH453
OCB453
PKA-RP60/71/100KAL
PKA-RP60/71/100KALR1.TH
PKA-RP60/71/100KALR1.TH-ER
OCH452
OCB452
PSA-RP71/100/125/140KA
PSA-RP71/100/125/140KA
OCH528
OCB528
PEAD-RP35/50/60/71/100/125/140JA(L)Q
PEAD-RP35/50/60/71/100/125/140JA(L)QR1.UK
HWE10090
BWE10160
SLZ-KA25VAQ3
SLZ-KA35/50VAQ3
SLZ-KA25VAQ3.TH
SLZ-KA35/50VAQ3.TH
OCH563
OCB563
SLZ-KA25VAL3
SLZ-KA35/50VAL3
SLZ-KA25VAL3.TH
SLZ-KA35/50VAL3.TH
OCH564
OCB564
OCH527C